Why is experimental methods is effective in investigating the effectiveness of plant in repelling mosquitoes?4 answersExperimental methods are effective in investigating the effectiveness of plants in repelling mosquitoes because they provide a controlled environment to test the repellent properties of different plant extracts. Studies have used various experimental techniques such as behavioral observations, mortality rates, and larval development assessments to evaluate the efficacy of plant-based repellents. These methods allow researchers to measure the response of mosquitoes to different concentrations and exposure times of plant extracts, providing valuable insights into their repellent properties. Additionally, experimental methods enable the comparison of different plant species and their extracts, helping to identify the most effective repellents for mosquito control. By conducting experiments in a controlled setting, researchers can gather reliable data on the effectiveness of plant-based repellents, contributing to the development of safer and more environmentally friendly alternatives to synthetic insecticides.
How lantana extract affects the population of insect pest?3 answersLantana extract has been found to have insecticidal effects on various insect pests. The ethanolic extract of neem seeds and petroleum ether extract of Lantana camara leaves were shown to significantly reduce the populations of cabbage pests Plutella xylostella, Brevicoryne brassicae, and Hellula undalis. A crude aqueous extract from Lantana camara leaves caused high mortality in Spodoptera litura larvae, with concentrations of 5 to 40% resulting in more than 55% total mortality. Lantana camara leaves, stems, and flowers were found to be repellent to subterranean termites, effectively preventing infestation. The hexanic extracts of Clusia fluminensis fruits and flowers, as well as their main constituents, lanosterol and clusianone, showed specific activity against hemipterans Dysdercus peruvianus and Oncopeltus fasciatus, affecting their survival and development. However, the hydroalcoholic extract from Lantana camara leaves was found to interfere with fertility and induce embryotoxicity in rats, without affecting general reproductive performance.
What is the efficacy of betel leaf extract as a housefly repellent?5 answersBetel leaf extract has been found to be effective as a housefly repellent. Studies have shown that the concentration of betel leaf extract significantly affects the mortality of houseflies, with higher concentrations leading to higher mortality rates. The effectiveness of betel leaf extract as a bio-pesticide against houseflies has been demonstrated, making it a suitable and environmentally safe method for controlling housefly populations. The use of red betel leaf extract has also been shown to effectively repel rice bugs, reducing their population below the economic threshold level. These findings suggest that betel leaf extract can be used as an alternative and safer option for pest control, reducing the reliance on chemical insecticides that can harm the environment and non-target insects.
What are the effects of betel leaf extract on houseflies?5 answersBetel leaf extract has been found to be effective in controlling houseflies. The study by Prayudhy Yushananta and Mei Ahyanti showed that the mortality of houseflies was affected by the concentration of the extract, contact time, and the interaction between concentration and contact time. The study by Safrida Safrida and Fitrah Asma Ulhusna also found that betel leaf extract significantly killed mosquitoes, which are also insects that spread diseases. Although there is no specific study on the effects of betel leaf extract on houseflies, the effectiveness of the extract against mosquitoes suggests its potential as a bio-pesticide for controlling other insect species. Further research is needed to determine the specific effects of betel leaf extract on houseflies.
Do the leaves of Acokanthera schimperi have insecticidal properties?5 answersThe leaves of Acokanthera schimperi have insecticidal properties. Compounds isolated from the plant showed larvicidal activities against the East Coast Fever vector Rhipicephalus appendiculatus. The plant extracts also exhibited in vivo antimalarial activity, supporting their traditional use in treating malaria. Additionally, the plant was found to contain triterpenoids, including a new triterpenoid ester, which may contribute to its insecticidal properties. Furthermore, methanolic extracts of Acokanthera schimperi showed antibacterial activity against Gram-negative bacteria, indicating its potential as an insecticide. These findings suggest that the leaves of Acokanthera schimperi possess insecticidal properties and could be utilized for the development of insecticides or antimalarial drugs.
Are there any studies on the use of plant leaves oil as pesticides?4 answersPlant leaves oil has been studied as a potential alternative to synthetic chemical pesticides in pest management. These botanical pesticides are biodegradable, do not leave residues in plants, and have low mammalian toxicity. Essential oils obtained from aromatic plants have shown promise as botanical insecticides, with neurotoxic and repellent effects on insects and mites. The use of plant essential oils in agriculture, particularly in organic food production, has gained attention as a safer and environmentally friendly option. Studies have demonstrated that plant oils, such as cottonseed oil, sunflower oil, corn oil, soybean oil, peanut oil, and sesame oil, can enhance the effectiveness of synthetic pesticides. These oils have been found to improve the efficacy of cetamiprid, with cottonseed oil showing the highest positive effect. Overall, research on the use of plant leaves oil as pesticides has shown potential for developing safer and more sustainable pest management practices.